What is the biggest airport in America?

At 53 square miles, Denver International Airport is the biggest airport in the United States and the second largest in the world.



The biggest airport in the United States by land area is Denver International Airport (DEN) in Colorado. Spanning a staggering 33,531 acres (52.4 square miles), it is twice the size of the next largest airport, Dallas/Fort Worth (DFW). To put its size in perspective, Denver Airport is larger than the entire city of Miami. It was designed with this massive footprint to allow for future expansion and to minimize noise complaints from nearby residential areas. In 2026, it continues to grow, adding more gates and capacity to handle its status as a major global hub. While Hartsfield-Jackson Atlanta (ATL) holds the title for the busiest airport in terms of passenger traffic, Denver remains the undisputed champion of size, famous for its iconic white-tented roof that mimics the snow-capped peaks of the nearby Rocky Mountains.

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Denver International Airport (DEN or DIA) is the biggest airport in the US and the world's second-biggest airport behind King Fahd International Airport.

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Covering an area of around 27 sq miles, Dallas International Airport is the third largest airport in the world.

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KEY POINTS. Atlanta Hartsfield-Jackson International Airport remains the busiest airport in the world with 5.2 million seats in September 2023. The composition of the Global Top 10 Busiest Airports is also the same as last month but there are a few changes to the rankings.

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King Fahd International Airport (DMM), Saudi Arabia –With a surface area of around 300 sq miles, King Fahd International Airport (DMM) is the largest airport in the world by size. The airport is located in Dammam, Saudi Arabia, and sprawls over 192,000 acres of land!

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Most Beautiful Airports of the World
  • Marrakesh Menara Airport, Morocco.
  • New Jewel Changi Airport, Singapore.
  • Incheon International Airport, South Korea.
  • Incheon International Airport, South Korea.
  • Dubai International Airport, United Arab Emirates.
  • Dubai International Airport, United Arab Emirates.


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KEY POINTS. Atlanta (ATL) to Orlando (MCO) continues to be the busiest domestic route in the USA in November 2023 with 291,464 seats, just 6k more than second placed Las Vegas (LAS) to Los Angeles (LAX).

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The biggest airports in the USA by size
  • 1- Denver International Airport, Colorado – 135 square kilometres. ...
  • 2- Dallas/Fort Worth International Airport, Texas – 69 square kilometres. ...
  • 3- Orlando International Airport, Florida – 54 square kilometres. ...
  • 4- Washington Dulles International Airport, Virginia – 52 square kilometres.


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1. Hartsfield-Jackson Atlanta International Airport (45.4 million) Located 10 miles from downtown Atlanta, Georgia's Hartsfield-Jackson Atlanta International Airport (ATL) is a massive domestic and international hub for air travel—especially for those traveling with Delta Air Lines and its partners.

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In terms of overall size, the King Fahd International Airport in Dammam, Saudi Arabia is the world's biggest airport by an overwhelming margin. Taking up nearly 300 square miles, this former United States airbase very nearly matches the area of all five boroughs of New York City put together (302.6 mi2).

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The airfield is managed by three FAA air traffic control towers. O'Hare has a voluntary nighttime (22:00–07:00) noise abatement program. Currently, O'Hare has the most runways of any civilian airport in the world, totaling eight.

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US airports dominate busiest airports list in october 2023. Half of the Top 10 Busiest Airports are located in the USA: Atlanta Hartsfield-Jackson International Airport retains its place at the top of the list with 5,360,834 scheduled seats for October.

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Schiphol is the biggest airport in the Netherlands, and the 4th largest in Europe. The airport is built as one large terminal split into 3 large departure halls.

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